I found something cool
https://onlineutf8tools.com/convert-utf8-to-hexadecimal
now I do (under windows) ALT + [some ascii code]..like ALT+220 for ▄
then I paste that ▄ into the page, it gives me the 3 hex UTF8 bytes, that I can just output to have the same character :-)
https://onlineutf8tools.com/convert-utf8-to-hexadecimal
now I do (under windows) ALT + [some ascii code]..like ALT+220 for ▄
then I paste that ▄ into the page, it gives me the 3 hex UTF8 bytes, that I can just output to have the same character :-)